Well we’ll have to take this with a grain of salt, but this surfaced on the Interwebs that details some Japanese promo flyer of the new Dunlop ZIII, the successor to the ZII Star Spec. With the Bridgstone RE71R being the hot ticket go to tire for all autocrossing needs (well aside those that prefer the BFGoodrich Rival-S), Dunlop had remained surprisingly silent in 2016. So while we know that it makes sense for a new compound release, and for that release to hopefully be imminent, what we don’t know if what we found here is actually a real thing or just a hoax. Still more options would yield interesting mix come race day.

Pictures presented for consideration:


z3_1 z3_2


Translation reads as follows for those that can’t read Japanese:

High grip compound. In addition to adopting new grip improver used in motor sports, grip performance is enhanced by high styrene polymer which increased heat generation by bonding a lot of styrene. Moreover, by adopting a high molecular weight polymer whose polymer chain is made longer than usual, wear resistance which is a reciprocal performance with grip performance is maintained. Pattern design with increased rigidity At the time of running, the center rib with a large load is made wider, and the pattern design that increased the land ratio improves the rigidity and improves grip performance and control performance. Profile with increased grounding During turning, we reviewed the profile so that the ground pressure is kept even, improving grip performance and control performance. The glowing purple things are labeled “grip improver” and the white squiggly lines are “high molecular weight polymer” defined in the blowout box below as a high styrene polymer. The tagline at the bottom basically says grip is improved while maintaining wear resistance. The various notes say the grip improvement comes from the high styrene polymer and wear resistance from the high molecular weight. And something that translates literally as “increase styrene bench number to increase heat build-up.” The notes on the tread patch point out that the new patch has fewer green (underloaded) and red (overloaded) spots and more yellow/orange which improves overall grip.”

Many thanks to Tom Kamman for the initial post 🙂